Neutrino and CP -even Higgs boson masses in a nonuniversal U(1)′ extension

Abstract

We propose a new anomaly-free and family nonuniversal U(1) extension of the standard model with the addition of two scalar singlets and a new scalar doublet. The quark sector is extended by adding three exotic quark singlets, while the lepton sector includes two exotic charged lepton singlets, three right-handed neutrinos and three sterile Majorana leptons to obtain the fermionic mass spectrum of the standard model. The lepton sector also reproduces the elements of the PMNS matrix and the squared-mass differences data from neutrino oscillation experiments. Also, analytical relations of the PMNS matrix are derived via the inverse see-saw mechanism, and numerical predictions of the parameters in both normal and inverse order scheme for the mass of the phenomenological neutrinos are obtained. We employed a simple seesaw-like method to obtain analytical mass eigenstates of the CP-even 3 × 3 mass matrix of the scalar sector.

Nonuniversal U(1)X extension to the MSSM with three families

“…Despite in this model we have 4 Higgs doubles, it recreates the same mass structure found in [2] when adopting the definitions (10-12). Thus, in the gauge boson sector we can split in two the acceptable parameter values given in the same reference in order to know the possible values for doublets VEV.…”

“…The model generates the correct squared mass differences reported for neutrino oscillations [6]. However, that is a result that arise from the no-SUSY version of the model [2]…”

Nonuniversal anomaly-free U(1) model with three Higgs doublets and one singlet scalar field

“…Moreover, R even splits in a see-saw rotation R SS even and a block-diagonal rotation R B even such that R even = R B even R SS even . Since |M hh | < |M hξ | < |M ξξ | the see-saw procedure will be implemented by following the reference [72] which blockdiagonalizes M hh such that the h scalars get separated from the ξ ones. The following approximations are made on the blocks in order to avoid cumbersome expressions after rotating out the ξ scalars:…”

Dark matter and collider signals in supersymmetric U(1)′ models with nonuniversal Z′ couplings

“…There are numerous possibilities for non-universal U (1) charges. These are classified in [27] and various aspects of their phenomenological implications have been studied both within non-SUSY and SUSY frameworks [28][29][30][31][32][33][34]. In this work, we revisit the supersymmetric U (1) models with non-universal charges, opting for a simple family dependent choice.…”